APA
Vaught R. S., Association for Computing Machinery & ACM Special Interest Group on University and College Computing Services. (1991). Proceedings of the 19th annual ACM SIGUCCS conference on User services. New York, NY: ACM.
Chicago
Vaught Russell S, Association for Computing Machinery and ACM Special Interest Group on University and College Computing Services. 1991. Proceedings of the 19th annual ACM SIGUCCS conference on User services. New York, NY: ACM.
Harvard
Vaught R. S., Association for Computing Machinery and ACM Special Interest Group on University and College Computing Services. (1991). Proceedings of the 19th annual ACM SIGUCCS conference on User services. New York, NY: ACM.
MLA
Vaught Russell S, Association for Computing Machinery and ACM Special Interest Group on University and College Computing Services. Proceedings of the 19th annual ACM SIGUCCS conference on User services. New York, NY: ACM. 1991.